Paper roll shaft



June 15, 1948, W. A. HAYSSEN PAPER ROLL SHAFT Filed Feb. 9, 1945Im/ENTOR.

HTTO/EWEMS.

.package wrapping Patented June l5, 1948 EAPER RGLL SHAFT William A.Hayssen,

to Hayssen Manufacturing Company,

Sheboygan, Wis., .assignor Sheboygan, Wis., a `copartnership ApplicationFebruary 9, 1945, Serial No. 576,984

3 Claims. l

This invention relates to improvements in paper roll shafts.

Package wrapping machines customarily have incorporated thereinrevoluble shafts or arbors on which rolls of wrapping material or paperare mounted and from whence the paper is unwound in web formation to bewrapped about packages passing through the machines. In a conventionalstructure both ends of a paper roll shaft are mounted on the machine inframe-carried bearings or supports. As empty paper roll cores must beremovedfrom a shaft periodically and be replaced by a new paper roll, itis necessary that some means be provided for permitting the removal ofthe shaft from its mountings vor permitting the disengagement of one endof the shaft from its support to permit the axial movement'forreplacement purposes of the-exhausted paper roll core and the new paperroll. Itis also desirable in connection with the paper roll shaft of apackage 'wrapping machine that means be provided for restraining orregulating the freedom of rotation of the shaft so that the wrappingmaterial willnot unwind therefrom too freely.

With the foregoing in mind, it is a primary object of the presentinvention to provide, for a machine, a paper roll shaft mounted in themachine at only one end of the ,shaft whereby the other end of the shaftis at all times A`free of obstructions and connections .permitting thefree axial movement along the shaft in the direction of the free endthereof of paper roll cores and paper rolls, whereby replacements onlthe shaft may be accomplished easily and rapidly without disengagingany portion of the shaft relative to its mounting means.

A'further object of the invention is to provide a paper rollshaftprovided with manually operated 'adjustable means for quicklyreleasably engaging the core of a paper roll to removably clamp thepaper roll on the shaft for revoluble movement withthe-shaft.

A further-object of the invention is to provide a 'paper roll shafthaving manually adjustable brake means for variably restraining freerotation of the shaft.

VA further object of the invention is lto provide va 4paper roll shaftreadily applicable to conventional package wrapping-machines andrequiring 'a minimum. of fixtures in connection with the shaft mounting.

A further object of the inventionis to provide a ypaper `roll shaftwhich is of very simple-construction, is inexpensive to manufacture,which lpermits the'easy replacement of paperv rolls, which same-with' aninner surface is `manually adjustable While mounted 4on a ma- Whilecarrying a paper roll, which is strong and durable and-efficient inoperation, and which is well adapted for the purposes described.

`With the above and `other objects in View, the invention consists ofthe improved paper roll shaft and its parts and:combina-tions as setforth in the claims.

In the accompanying drawing in which the same reference charactersindicate the same parts in all of the views:

Fig. 1 is a longitudinal 4sectional view of the improved 'paperrollshaft Vshown Amounted in lthe chine and frame `portion vof a packagewrapping machine and having a paper roll applied thereto, a fragmentaryportion ,of thelatter being shown in section;

lFig. 2 is a cross sectional view taken online 2 2 of Fig. land ona-larger scale;

Fig. 3 is a cross sectional view taken on line fil-3 of Fig. l and on alarger scale; and

Fig. 4 is a cross lsectional view taken on line li--rlnf Fig. land on `alarger scale and with other portions broken away .and in section to showstructural details.

Referring now more particularly to thedrawing, it .will appear that aportion of the frame of a package wrapping machine `or the like isindicated by lthe numeral 8, said machine portion having a transversebore 9 in which the end portion of an inner shaft member or core lll hasa force t so that in the mounted condition, the inner shaft member-lllremains stationary.

A portion of the stationary shaft -Il extending from an intermediatepoint toward the Ymachine frame 8 is surrounded by a sleeve il which isfree to rotate on the center shaft Iii. At its outer end-the sleeve H isenlarged and flanged to form a cup H whose open end abuts a face of themachine frame'8. Lodged within the cup Il' and surrounding the centershaft lil are segment shaped 'brake shoes l2. 'Each brake shoe is formedwith an internal radially directed cylindrical recess I3 which houses inits lower end a plungerl'll having a tapered or conical inner endportion it. VThe upper end portion of each plunger It resiliently`engages a confined coiled spring 15 and each spring l5 has its otherend impinging against the shoulder formed at the -outer end of its boreI3. Thus, outward movement of a plunger IA `will apply, through thespring l5, yielding outward pressure on the engaged brake shoe l2 tofrictionally contact the portion of the cup l l of the sleeve l l.

As will be apparent, the brake shoes I2 are intended to be adjusted inrespect to their yielding frictional engagement with the cup II in amanner so as to exert a desired restraint or braking action on therotation of the sleeve II and parts carried thereby. The supported endof the center shaft IE! has an axial bore I3, a portion of which isthreaded and which is engaged by a threaded adjusting screw I 1 whoseprojecting outer end portion is enlarged and knurled, as at I8, formanual manipulation. The shank of the adjusting screw I1, inwardly ofits threaded portion, is reduced and its extremity is tapered orconical, as at I 9. The tapered surface I9 of the adjusting screw I1 isin adjustable contact with the tapered extremities I4 of' all of the,brake shoe plungers I4. Thus, when the adjust-vr ing screw I1 is turnedinwardly, its tapered extremity I9 will ride on the tapered extremitiesI4Y of vtheY plungers t4 to project the plungers outwardly and therebycause the brake shoes I2 to apply greater frictional restraint on thecup Ilrofthe sleeve II. When the adjusting screw I1 is turned Yin theopposite direction or outwardly, its contact with the tapered ends ofthe plungers I4 is such that the springs I5 are permitted to urge theplungers inwardly' to relieveY outward pressure on the brake shoes andVto thereby reduce the frictional restraint imposed by the brake shoes.

,The sleeve I I is rotatably held in its assembled relation on thecenter'shaft I0 and against axial separation by an end disc-2i) ofgreater diameter thanthe center shaft which is secured to theV inner endof the center shaft bya screw 2|. Peripheral portions of the disc 2Gimpinge against the innerendof the sleeve II. i

An elongated outer tubular member 22 forms the outer or enclosing shellof the assembly. The outer tubular member 22 has a force t with thesleeve II so as to form therewith a unit which will rotate on the centershaft Il).A

Intermediate its ends and commencing inwardly of the inner end of thesleeve II, the

' outer tubular member is provided with elongated spaced apart slots 23.In Veach of said slots there is radially adjustably positioned a coreclampingmbar 24. Each bar 24 has its opposite extremities`outwardly'inclined, as at 24'. Within thebore of the outer tubularmember 22 and spaced apart a distance less than the length of a clampingbar 24 are a pair of slidafble supporting discs 25. The diameter of thediscs are slightly less than the internal diameter of the outer tubularmember 22, and each disc is provided wth a central bore threaded toengage the threaded shank portions 26 and 26 of an elongated axial screwrod 21. Peripheral portions of the supporting idiscs 25 are formed withspaced apart tapered slots 28 to slidably receive the taperedextremities 24' of the clamping bars 24. The clamping bars 24 areyieldingly held inV their assembled relationship relative to thesupporting discs 25 and are yieldingly joined together .by circularlyarranged coiled springs 29 which vencircle the axial screw rod 21 andpass through apertures 30 therefor in the clamping bars;

The outer orfree end of the tubular member 22 is closedby a head 3|secured thereto and formed with an axial bore 33 through which the outerendof the screw rod 21 revolubly extends.

A portion of thescrew rod 21, adjacent the inner face of the head 3l,has affixed theretor a collar 34. Abutting the outer end of the head 3|and secured to an extended portion of the screw rod 21 is a knurledoperating handle 35.

As has been mentioned, the improved shaft is adapted for mounting in aframe portion of a package Wrapping machine and is designed toreplaceably carry rolls of wrapping material or paper which usuallycomprises a central tubular core 36 with a supply ofk paper or wrappingmaterial 31 wound thereon. It is intended that the paper 31 be unwoundfrom the core 35 in web formation to pass into the Wrapping machine forseverance into desired lengths wherein it is wrapped about packagesadvancing through the machine. The internal diameter of the paper rollcore 36'is slightly greater than the external diameter of the outertubular member 22 of the shaft assembly to permit axial movement of thepaper roll Vrelative to the shaft for positioning the roll on the shaftand for removal and replacement purposes.

In the present improvements, as distinguished from conventionalpractices, the shaft assembly is supported in the machine frame at onlyone end of the shaft, thereby leaving the opposite end of the shaftfor-med with the handle 35 entirely free .ing an empty paper Vrollcorefrom the shaft assembly or prior to inserting a fresh paper roll on theshaft, the clamping bars 24 should be retracted so as to be innon-protruding positions relative to the outer surface of the tubularmember 22. This is accomplished by turning the handle 35 in a directionso that the supporting discs or travelling nuts 25will be moved awayfrom each other and in directions toward the ends of the tubular member22. Such movement of the disc 25 through the screw shaft 21 retracts theclamping bars 24 as the same are then permitted, because of theirinclined ends 24', to ride downwardly in the inclined slots 28 of thedisc 25. i Obviously, retraction of the clamping bars 24 a sufficientdistance will then release the paper roll core 26 to permit'its axialmovement along the junction with the inclined Surfaces 2li and 28,`

shaft assembly and its removal therefrom, this movement being toward theright in Fig. 1.l The empty paper roll core is replaced by a fresh rollof paper in a reverse manner, and when the new roll of paper is inposition on the shaft assembly, the handle 35 is turned in a directionto operate the screw rod 21 so as to draw the supporting discs 25 towardeach other. Such action, in conwill cause outward radial projection ofthe clamping bars 2e, and when said bars are projected sufficiently farbeyond the outer surface of the tubular member 22, their outer edgeswill impinge against inner surface portions of the core 36 to clamp itin position and to hold it to the revoluble 'sleeve portions of theshaft assembly. In a. package wrapping machine with a web of paperextended from the roll, power is applied to the web to unroll it asdesired `from the shaft assembly. In the present improvements the centershaft member I llis held stationary, but the sleeve members II and 22,with the roll being clamped to the Y latter, are free to turn. Aspreviously mentioned,

it is desirable that the freedom of revoluble movement of the shaftsleeve be regulatable and to that end the brake shoes I2, previouslydescribed, may be adjusted, to vary as desired the frictional restraintplaced on the revoluble portions of the shaft assembly.

The adjustment of the shaft brake, as well as the manipulation andadjustment of the paper roll core clamping bars, is accomplishedmanually through the accessible handles IS and 35, fboth of which arereadily manipulatable with the shaft in its mounted position` andcarrying a paper roll. The mounting of the improved paper roll shaft isextremely simple and a minimum of connections are required as betweenthe shaft and the frame of a machine. Stoppage of a package wrappingmachine equipped with` the improved paper roll shaft is minimized as totime because of the facility with which `paper roll replacements may bemade, and such replacements are easily made without disturbing themounting of the shaft relative to the machine frame. The improved paperroll shaft is furthermore of simple and inexpensive construction, iseasily manipulated, and is well adapted for the purposes set forth.

What is claimed as the invention is:

1. A shaft construction, comprising an inner core, a sleeve and tubeunit `revolubly surrounding a portion of said core, said core extendingaxially beyond one end of the sleeve and tube unit for anchorage in asupporting frame, a brake interposed between portions of the core andsleeve and tube unit and housed by the latter, and manually operableexpansiible means associated with -another internal portion of thesleeve and tube unit for releasable engagement with a material rollcarried by the sleeve and tube unit, said sleeve and tube unit providingthe housing and support for both the brake and the expansible means.

2. A shaft construction, comprising an inner core, a sleeve and tubeunit revolubly surrounding a portion of said core, said core extendingaxially beyond one end of the sleeve and tube unit for anchorage in asupporting frame, brake shoes interposed between portions of the coreand sleeve and tube unit and housed by the latter, manually actuatedbrake adjusting means mounted in the core and engaging the brake shoesand extending externally of the core, ex-

pansibe means housed Within another portion of y the sleeve and tubeunit for releasable engagement with a material roll carried by thesleeve and tube unit, and a manual operating member extending axially ofthe sleeve and tube unit for controlling said expansible means.

3. In combination, a supporting frame, a stud shaft having one endfixedly mounted in said frame and extending laterally thereof, a sleeveand tube unit revolubly mounted on the extended portion of said studshaft and projecting therebeyond, the outer end of the sleeve and tubeunit being free and a portion of the sleeve and tube unit surroundingthe stud shaft being formed with a cupped enlargement, brake shoeswithin said cupped enlargement, means yieldingly anchoring the brakeshoes to the stud shaft, manually operable means extending axially intothe stud shaft and engageable with said shoe anchoring means for varyingthe frictional engagement between the shoes and said cupped enlargement,the outwardly extended portion of the sleeve and tube unit having spacedlongitudinal slots therein, clamping bars movably engaging said slots,means within the sleeve and tube unit yieldingly connecting said bars,shiftable discs within said sleeve supporting said bars, contactingportions of the bars and discs being formed with cooperating camsurfaces, and an operating rod disposed axially within said sleeve andtube unit and in screw threaded engagement with said discs, the rodextending beyond the free end of the sleeve and tube unit and turningmovement of the rod being effective to shift the discs and project orretract the clamping bars in their slots and relative to the outersurface of the sleeve and tube unit for clamping or releasing a materialroll mounted on the sleeve and tube unit, said sleeve and tube unitforming a closing housing for the major portion of the stud shaft, thebrake shoes, the brake shoe operating means, the clamping bars, theshiftable discs, and the operating rod.

WILLIAM A. HAYSSEN.

REFERENCES CITED UNITED STATES PATENTS Number Name Date 1,409,504Wheildon Mar. 14, 1922 1,673,444 Derry June 12, 1928 1,908,562 Schafferet al May 9, 1933 1,955,762 Saltzrnan Apr. 24, 1934 2,097,287 McKennaOct. 26, 1937 2,199,603 Ackley May '7, 1940 2,266,408 Bruestle Dec. 16,1941 FOREIGN PATENTS Number Country Date 26,037 Great Britain 1908274,808 Great Britain Dec. 8, 1927

